Gardner SDG2-23 Horz. Opposed Double Disc Grinder 
Automatic Gun Feed Fixture
Serial Number: 89330

SPECIFICATIONS:
23″ Diameter Wheels x 3″ Thickness
12 1/8″ Max Opening between Steel Backing Plates
20HP Drives
Automatic Gun Feed Fixture
Automatic Face Cyr on Both Heads
Automatic Dresser
Auto Compensation
Free Standing Electrical Panel
Filtration System

Currently New Diamond Wheels on the Machine

Gardner SDG3-30 Horizontal Opposed Disc Grinder
Model: SDG3-30
New – 1989
Rebuilt & Retrofit (Knapp Engineering) – 1998
Serial No. 900-32

SPECIFICATIONS:
Abrasive Wheel OD: 30″ / 762 mm
Abrasive Thickness (Usable): 3″ / 76 mm
Opening between Wheels – Maximum: 15″ / 381 mm
Wheel Mounting Flange OD x Thickness: 17″ / 432 mm x 1-1/2″ / 38.1 mm
Spindle Drive Motors (2): 40 HP/3 Ph/60 Cycle/460 Volt

EQUIPPED WITH:
Rotary Work Carrier (Variable Speed)
Rockwell RS Logix 5000 PLC (Ladder Logic, System Software, Operating Disks)
Allen Bradley Panelview Plus 1000 Operator Interface with Ethernet Connection
Allen Bradley 1336 Plus Sensorless Vector Drive (Adjustable Frequency Drive)
Programmable Wheel Dresser (Automatic Dressing)
Trabon Automatic Lubrication System

Gardner 2H20-23 Horizontal Opposed Disc Grinder

23″ Grinding Wheels
Rotary Carrier
20 HP Main Spindle Drive Motors
Thru Spindle Coolant
Central Coolant System
Free Standing Electrical Panel

Gardner SDG2-23 Horizontal Opposed Double Disc Grinder

23″ Wheels
20 HP Main Drive Spindle Motors
30″ Rotary Carrier w/ spacer
DC2 VS Drive For Carrier
Coolant in base w Central Tank
Trabon Lube System
Free Standing Electrical
440 v
Thru Spindle Coolant
2 Axis DRO

GardnerSDG5-30 Horizontal Opposed Double Disc Grinder Thru – Feed
Serial Number: 629-9

SPECIFICATIONS:
30″ Wheels x 3″ Thickness
15″ Max Opening Between Backing Plates
Belt Type Thru-Feed 66 to 400 RPM
100 HP Spindle Drives
Rapid Feeds on Both Heads
Incremental Feeds on Both Heads – 0.0001″
Thru Spindle Coolant
Spindle Lube & Grease Alerts
Spindle Load Meters
Motorized Dresser
Free Standing Electrical
Coolant Pump On Machine
Machine Dimensions: 126 3/4″ (L-R) x 90 1/2″ (F-B) w/o Electrical Panel
Machine Weight Approx: 23,500 LBS.

Machine is Currently In Plant Under Power

Gardner 2H20-23 Horizontal Double Opposed Disc Grinder
SN: 403-5
15HP Spindle Motors
23″ Wheels
240 Volt
Roller Type Thru Feed Fixture
Dresser
Free Standing Control Panel
Free Standing Electrical
Coolant Thru Spindles no Pump or Ext. Tank

Machine Completely Re-Conditioned in 2006

Gardner SDG5-30 Thru-Feed
Serial Number: 690-1

Specifications:
40HP Spindle Drive Motors
30″ Grinding Wheels
Dresser
Danfoss VLT 5000 FLUX Servo Dives for Feed on Both Heads
Allen Bradley Micro Logix 1500
Allen Bradley Panel View 550 Control
Automation Direct GS2 Drive for Thru-Feed Fixture Speed Control
3 Tier Coolant tank w/ pump
Free standing electrical 460/3/60

Gardner Opposed Double Disc Grinder 2H30 – Thru Feed Fixture
Encyclon model 654-300DT (300 gallon, dual tank) cyclonic coolant filtration system (bought new 11/13)

This Grinder rebuild was completed in 2013 to grind clutch disks. The job went away and the machine since rebuild has about 100 hours on the grinder and coolant filter. This machine is a 30″ wheel thru feed style with a caterpillar feeder unit for the fastest production rates of any double disc grinder. All new electronics. Soft starter for main spindles. PLC controlled. Stepper drives on the feed slides. Servo drives for dresser and caterpillar feeder. Digital slide readouts with glass scales. Old pneumatic slide movements were replaced with stepper drives that are fully programmable with multi step feeds. All new heavy duty dresser shaft and bearings with servo drive speed control electrics. Wheel spindles and carriers completely rebuilt. Machine will come with feed rail, the exit feed ramp, several spare sets of thru feed guides, several sets of wheels (one brand new in the packaging) one extra set of wheel back plates and all of the original parts that the machine came with from the factory.

(1) Used Gardner SDG5-30 Horizontal Opposed Double Disc Grinder

Specifications:
30″ Diameter Grinding Wheels
40HP Spindle Drive Motors
15″ Max Opening Between Wheels
6″ Max Work Capacity Thickness
0.0001″ or 0.000050″ Feed Increments

Equipped With:
Chain Hold Down Rotary Feed Fixture
Additional Carrier
(1) Set of Spare Backing Plates
(2) Full Sets of MRC Spindle Bearings ( New in Box )
460 Volt

Out of Running Service from Caterpillar